/*
 * Copyright 2010 - Jeremie Brebec
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.jb.sharedbills.client.form;

import com.google.gwt.core.client.RunAsyncCallback;

/**
 * 
 * @author jeremie
 *
 */
public abstract class ModalRunAsync implements RunAsyncCallback {

	public ModalRunAsync() {
		modalFrame =  new ModalFrame();
		modalFrame.show();
	}
	
	/**
	 * 
	 */
	@Override
	public void onFailure(Throwable reason) {
		hideModalFrame();
	}

	/**
	 * 
	 */
	@Override
	public void onSuccess() {
		try {
			execute();
		}
		finally {
			hideModalFrame();
		}
	}
	
	abstract void execute();
	
	/**
	 * 
	 */
	private void hideModalFrame() {
		modalFrame.hide();
		modalFrame = null;
	}
	
	private ModalFrame modalFrame = null;
	
}